GHK Cu Side Effects, Complications, and Risk Profile GHK Cu Peptide Therapy Brea, CA Orange County Food Derived TripeptideCopper Self Healing Hydrogel for Infected Wound Healing Biomaterials Research If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection GHK Peptide Injection and GHK Cu Benefits, Uses ,safety